308 MEDICAL MYCOLOGY 



with smooth wall which is colored blue by KIJ, ; 4-8 spores per ascus. Sedi- 

 ment in malt extract, occasionally also a ring is formed. Various sugars 

 strongly fermented ; nitrate not assimilated, no growth with ethyl alcohol as 

 a substrate. 



So far there has been no case of pathogenicity for mammals which has 

 not been shown to be wrongly referred here. Apparently Bacillus megathe- 

 rium has been frequently picked up as a contamination and referred here, 

 the granule or oil globule being mistaken for a small spore. All reports of 

 this genus with spore number fewer than four, especially if the cell size is 

 small, should be studied very critically before admission to this group. 



Schizosaccharomyces hominis Benedek, Centralbl. Bakt. I, 104: 291-303, 

 3 pis., 1927. See also other papers by Benedek. 



Dorrepaal (1930) shows conclusively that this organism is a bacillus either 

 identical with or closely related to Bacillus megatherium BarJ^ 



DEBARYOMYCES 



Deharyomyces Kloecker, C. R. Trav. Lab. Carlsberg 7: 273, 1909. 



The type species is Deharyomyces glohosus Kloecker. 



Cells predominantly spherical but also ovoid, mostly small ; vegetative 

 reproduction by sprouting. Asci following isogamous or heterogamous copula- 

 tion occasionally parthenogenetic ; spores spherical mostly with a large central 

 oil globule, wall verrucose (warts often difScult to see), usually only 1 spore 

 per ascus. In malt extract, producing sediment, usually a ring and occasion- 

 ally a pellicle. In most species no fermentation, very few species having a 

 good fermentation ; nitrate assimilation negative ; with ethyl alcohol as a 

 substrate, growth good, often producing a thin pellicle on this medium. 



Key to Species 



Glucose and sucrose strongly fermented, slight ring but no pellicle. 



Colonies becoming bister or darker on agar. D. Hitdeloi. 



Colonies remaining wliite or light colored. D. mucosus. 



Colony color unknown. 



Asci, 2-5m in diameter. D. emphiisematosus. 



Asci, 5-7ai in diameter, fermentation questioned. D. Gruetsii. 



No fermentation or a weak fermentation of glucose only. [Ota reports slight fermentation of 

 some other sugars, probably either due to impurities or to the nietliods used.] 

 Eing formed on malt extract but no pellicle. 



Sucrose not inverted, cells 2-3.5 x 3-7jU,, ovoid, occurring in chains in old cultures. 



D. KloecTceri. 

 Sucrose slightly inverted, cells 2-8 x 2-6/a in groups springing from the same mother 



cell. D. Nadsoni. 



Sucrose inverted. 



Cells 3.6-5.4 x 1.8-3ai, cells single or in pairs. D. Matruchoti. 



Cells 2-6iJi rarely 8-10^, rarely also in chains. D. Fabryi. 



